Creating a Jigsaw Puzzle with iPhoto 4?

Hi y'all, me again. I want to create a photo collage with a jigsaw puzzle line separating the pictures. I am planning Christmas Gifts. Anyone found any free patterns to use? I tried searching, but probably haven't worded my request well "Jigsaw Puzzle Patterns for Photo Collage" ,came up with - buy art jigsaw puzzles, Photoshop for Windows, etc. I wish I had the speed and the time to find what I need. Well, I'll check in here after dinner if I can, hmm, maybe back to my standby AppleWorks... Appreciate any suggestions, thanks in advance, Linda